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any.h includes <algorithm> (but this is to go away).
if a class needs <algorithm> itself, it ought to include it explicitly.

since the new ax-macros also define these (e.g. on OSX)

not only GL_LIBS

Signed-off-by: Antoine Villeret <antoine.villeret@gmail.com>

avoid more crashes

strlen(NULL) is undefined behaviour, which makes open_via_path(NULL,...)
crash on some systems.
so we now use a proper C-string
that only consists of the terminating 0-byte.

this should *really* close sf-bug #225

Fixes sourceforge's pd-gem/bugs/225

rather than !HAVE_LIBGLEW.
this is necessary after updating the GEM_CHECK_LIB.

check: why is there no HAVE_GEM_LIB_GLEW or the like?

rather than on the library check

makeFont() must free all allocated ressources, so we don't need
to free m_font ourselves (which would result in a double free if
m_font is really only a proxy to the real font-ressource)

github Closes: umlaeute/Gem#16

and added dummy (t_symbol*) argument for setMess(), since CPPEXTERN_MSG()
requires it...

when building GEM_MUILTICONTEXT, we want to get rid of GemWinCreate and friends

- there's no render() method (fixing FTBFS)
- remove the boilerplate; it's easier to see that these do nothing
  if we are not deluded by long comments

LATER check which M$VC versions have this type, and only typedef it for
those that lack it.


reapplied patch-set after migration to frei0r-1.2

rather than always building both

they tend to saturate less...

fixes crashes with small dot-sizes (resulting in devision-by-zero)

so we cannot calculate both Y0 & Y1.

CID:27796,27808

CID:27972